Bus
Bass or Bus is a kind of voice that is a male singer, who possesses the skills of tone 2 to E4. However, some singers whose low tone can be very extreme, can reach C2 tone. . ^ Owen Jander, Lionel Sawkins, J. B. Steane, Elizabeth Forbes. "Bass". Grove Music Online. http://www.grovemusic.com. Retrieved 14 June 2006 .; The Oxford Dictionary of Music gives E2-e4 / f4 ...